-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: OpenLDAP2 Announcement-ID: SuSE-SA:2002:047 Date: Fri Dec 6 11:11:11 MET 2002 Affected products: 7.1, 7.2, 7.3, 8.0, SuSE eMail Server III, 3.1, SuSE Linux Connectivity Server, SuSE Linux Enterprise Server 7, SuSE Linux Office Server Vulnerability Type: remote command execution Severity (1-10): 6 SuSE default package: no Cross References: - Content of this advisory: 1) security vulnerability resolved: Buffer overflows in openldap2. problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - traceroute-nanog - gnuplot 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information OpenLDAP is the Open Source implementation of the Lightweight Directory Access Protocol (LDAP) and is used in network environments for distributing certain information such as X.509 certificates or login information. The SuSE Security Team reviewed critical parts of that package and found several buffer overflows and other bugs remote attackers could exploit to gain access on systems running vulnerable LDAP servers. In addition to these bugs, various local exploitable bugs within the OpenLDAP2 libraries (openldap2-devel package) have been fixed. Since there is no workaround possible except shutting down the LDAP server, we strongly recommend an update. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. To be sure the update takes effect you have to restart the LDAP server by executing the following command as root: /etc/rc.d/ldap restart i386 Intel Platform: SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/openldap2-2.0.23-143.i386.rpm 0facbec09078e1a849b629a335d25dcf ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/openldap2-devel-2.0.23-143.i386.rpm 90b2aff137bd510930835b7a7cb7bc1e patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/openldap2-2.0.23-143.i386.patch.rpm aac122b6dda874c97d2e3f8e43a33897 ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/openldap2-devel-2.0.23-143.i386.patch.rpm e032d25cd37167b956a41b45e7c1bc60 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/openldap2-2.0.23-143.src.rpm 773c24a1654055b692dbfe6c1ce436f2 SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/n2/openldap2-2.0.12-44.i386.rpm 0c3078060330559ae49d67cdb0def908 ftp://ftp.suse.com/pub/suse/i386/update/7.3/n2/openldap2-devel-2.0.12-44.i386.rpm 4d09ba68655344abc273f7cb67fee482 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/openldap2-2.0.12-44.src.rpm 58706b1104fec0d6a6533e5f6decb8cd SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/openldap2-2.0.11-67.i386.rpm 28f575d89d8fbb9c269b158d12b599a6 ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/openldap2-devel-2.0.11-67.i386.rpm 7edf8a034f6de9ec15fd0d0e683e25e3 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/openldap2-2.0.11-67.src.rpm 1aac2bc81f82065513845a0e923433bf SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/n2/openldap2-2.0.11-66.i386.rpm 901b6452a24470b5cf39223e4b4a611d source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/openldap2-2.0.11-66.src.rpm d5d0a0a397f919b2f5d644c517dd56a5 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n2/openldap2-2.0.12-27.sparc.rpm 4639159e2de3a53115b4a7a918a79864 ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n2/openldap2-devel-2.0.12-27.sparc.rpm 609773f10ce2ea8953f4fc8772f4af23 source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/openldap2-2.0.12-27.src.rpm 70758c3e7c36f10a53980eaeb6bddea3 AXP Alpha Platform: SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/n2/openldap2-2.0.11-30.alpha.rpm 3d6bf0861070044c54ed52e8777192b6 source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/openldap2-2.0.11-30.src.rpm 3e0867844268b399d6ac2b9788d017f4 PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n2/openldap2-2.0.12-54.ppc.rpm fa2268bf1629c69db048371b67a1e177 ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n2/openldap2-devel-2.0.12-54.ppc.rpm e5f6ea2f05c6f5904834e8083ef8502b source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/openldap2-2.0.12-54.src.rpm 5c88d479f0f54b6b933f11a63e8d0c42 SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/n2/openldap2-2.0.11-27.ppc.rpm b6630f01be5e342cba2167a1f69583bf source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/openldap2-2.0.11-27.src.rpm 5664341323793814db38b162d4cf07dc ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - traceroute-nanog Due to recent postings on bugtraq@securityfocus.com new traceroute-nanog packages are currently being built and will be released as soon as possible. - gnuplot An error in a patch for french documentation added by SuSE leads to a buffer overflow in gnuplot that can be exploited to gain root privileges by a local attacker. gnuplot is installed setuid root on SuSE Linux before (excluding) 8.0 to be able to display graphics with the SVGA library. We have provided update packages at the usual location that fix the vulnerability. ______________________________________________________________________________ 3) standard appendix: authenticity verification, additional information - Package authenticity verification: SuSE update packages are available on many mirror ftp servers all over the world. While this service is being considered valuable and important to the free and open source software community, many users wish to be sure about the origin of the package and its content before installing the package. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package. 1) execute the command md5sum <name-of-the-file.rpm> after you downloaded the file from a SuSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security@suse.de), the checksums show proof of the authenticity of the package. We disrecommend to subscribe to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless. 2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SuSE in rpm packages for SuSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SuSE Linux distributions version 7.1 and thereafter install the key "build@suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . - SuSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - general/linux/SuSE security discussion. All SuSE security announcements are sent to this list. To subscribe, send an email to <suse-security-subscribe@suse.com>. suse-security-announce@suse.com - SuSE's announce-only mailing list. Only SuSE's security announcements are sent to this list. To subscribe, send an email to <suse-security-announce-subscribe@suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info@suse.com> or <suse-security-faq@suse.com> respectively. ===================================================================== SuSE's security contact is <security@suse.com> or <security@suse.de>. The <security@suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature shows proof of the authenticity of the text. SuSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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